Canal View by Prasanna Seshadri
or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)
Author/Opus: This is the 225th puzzle from our contributing puzzlemaster Prasanna Seshadri.
Rules: Shade some empty cells black to create a single connected group. Cells with circles cannot be shaded, and the shaded cells cannot form a 2×2 square anywhere in the grid. Each numbered cell indicates the total count of shaded cells connected vertically and horizontally to that numbered cell.
Difficulty: 3 stars
Time Standards (highlight to view): Grandmaster = 3:30, Master = 5:30, Expert = 11:00
Solution: PDF; a solution video is also available here.
Note: Follow this link for other shading puzzles. More Canal View puzzles are in Shading Variety Collection by Prasanna Seshadri.
Kinda enjoying this puzzle type…. my usual time for solving: double the expert time !!!